Screen.



FIIJI 1 E WITNESQES: F El INVENTOR. g 55 I M 6L W, B

Patented Dec. 29, 1914.

UNITED STATES PATENT OFFICE.

HERBERT A. NORTHROP, OF PALMER, MASSACHUSETTS; JOSIE M. NOBTHROP EXEGUTRIX OF SAID HERBERT A. NORTHROP, DECEASED.

scanner.

Specification of Letters Patent Patented Dec. 29, 1914.

Application filed October 20, 1913. Serial No. 796,134.

To all whom it may concern Be it known that I, HERBERT A. NORTH- ROP, a citizen of the United States of America, residing at Palmer, in the county of Hampden and State of Massachusetts, have invented a new and useful Screen, of which the following is a specification.

My invention relates to improvements in window screens, in which the screen fabric is held in place over the entire window opening, on the outside, by means of top and bottom bars, without side bars, and consists of a screen comprising such fabric and top and bottom bars therefor, with certain peculiar retaining and fastening means therefor, all'used in connection with a window frame, as hereinafter set 'forth.

The primary object of my invention is to provide an outside screen that is not only cheap and simple in construction, but one that can be very easily and quickly put up and taken down, and when applied is securely held in place, does not interfere in anyway with the movement of the Window sashes, and may be readily rol'led for ship ment or storage. With screens of this type heretofore made, the fastening means in order to be adequate for the purpose have been in the form of screws or other parts or members that must be removed, in order to take down such screens, and so are very liable to become. lost or misplaced. This is an undesirable and troublesome feature which I have entirely avoided by employing fasteners that remain in place, either when the screen is in position over the window or removed from such position.

Other objects and advantages will appear in the course ofthe following description.

I attain the objects and secure the advantages of my invention by the means illustrated in the accompanying drawings, in which Figure 1 is a perspective view from the outside of a practical form of embodiment of my invention; Fig. 2, a vertical section through the same, and, Fig. 3, an enlarged elevation of one of the fasteners provided to secure the screen to the window casing or frame.

Similar figures refer to similar parts throughout the several views.

In the first two views a window frame is represented at 1 and a sill at 2, both of ordinary construction. The screen, that is designed to cover the opening in the aforesaid frame, consists of top and bottom bars 3-3 and a length of screen fabric 4 which is firmly attached at its ends, by any suitable means, to said bars on the inside, so that such fabric comes next to .the outside face bearings for a pair of fasteners 5, which both support and confine said bar at its projectingv terminals, and also to afford ample bearing surfaces to engage the sides of the {)rame 1, especially in the case of the bottom There is a pair of fasteners 5 for each bar 3, those of the upper pair projecting from the outside face of the frame 1 at points adjacent to the upper corners of the frame opening, at the right and left respectively of such corners, and each of those of the lower pair of such fasteners projecting from such face directly in line with one of those above, and being located above the sill 2 at a distance which is equal to the width of the bottom bar 3. Each fastener 5 consists of a screw-threaded shank 6 which is adapted to be screwed into the frame 1, and a head 7 which is in angular relation to such shank. Preferably the head 7 stands outwardly a little from the perpendicular, or forms an obtuse rather than a right-angle with the shank 6. The purpose of this is to facilitate the engagement and disengagement of the parts, and to cause the heads 7 to bear at their inner terminals more firmly on the, bars 3, than at their outer terminals, whereby is produced a wedging eflect or cam action. This latter effect or action is desirable, because the pull of the fabric 4 tends to force the top and bottom or outer longitudinal edges of the bars 3, taken as a pair, against the frame 1, and it is quite desirable not to say necessary that the inner edges of such pair be also held or forced against said frame. As previously intimated, the outward inclination of the free ends of the heads 7 makes it easy to slip the top bar 3 into place and to fasten the bottom bar 3. inthe manner presently to be described. The

I shanks 6 of the upper pair of fasteners are set into the frame 1 just far enough to leave projecting only enough of such shanks to re-- ceive the upper bar 3 between said frame and the heads 7 of said fasteners, and the same thing is substantially true of the under pair of fasteners 5.

In placing the screen, which is usually rolled when not in use, in position, the outer bar 3 of the roll, or in any event one .of the bars 3, is first placed on the upper. pair of "fasteners 5, if necessary being crowded'down onto the shanks of such fasteners behind the heads of the same. Then the other bar 3,

after unrolling the screen if rolled,is forced I down to make the fabric taut andpressed under the shanks of the lower fasteners 5,

while the latter have their heads turned outwardly, as represented by dotted lines at 88 in Fig. 1. And finally the lower fasteners are turned to bring their heads down in front of the bottom bar 3. The bars 3- are now held securely by the four' fasteners against the frame, the frame opening is' fully covered. The bottombar 3 is held-by the lower fasteners 5 on the sill 2 or between said sill and the shanks of said fasteners, hence there is no liability that saidbar will be displaced. To remove the screen, simply turn the lower fasteners so that-their heads are out of the way of the bottom 'lo'ar and attached fabric, draw said bar from beneath said fasteners, and with the hand or a stick orother implement lift the top bar out of engagement with the upper fasteners, the

old in the art. 1

What I claim as my invention, and desire to secure by Letters Patent, is-

1. The combination, in a window screen,

' with a window frame, and two pairs of fasteners respectively projecting from the upper and lower portions of said frame, each of'su ch fasteners consisting of a shank and a head in angular relation to said shank, of

two bars, and a length of screen'fabric attached to such bars and of a width which is less than the length of either of such bars, the latter being adapted respectively to be a received on the shanks of the upper pair of said fasteners and under the shanks of the lower pair of said fasteners, with the heads of said fasteners in front in all cases,-and adapted to counteract the pull of the fabric on the bars and with said fabric to force said bars tightly against the'window frame. 2. The combination, in a window screen, with a window frame, and two pairs of fasteners respectivelyv projecting from the upper and lower portions of said frame, each of such fasteners consisting of a shank and a head arranged in obtuse-angular rela tionship, of two bars, and a length of screen fabric attached to said bars and of a width which is less than the length of either bar, said bars being adapted respectively to be received on the shanks of the upper pair of said fasteners and under the shanks of the under pair of said fasteners, with the heads of said fasteners in. front and in binding relation at their inner or base terminals with the contiguous edges of said bars.

3. The combination, in a window screen,

with a window frame, and two pairs of fasteners respectively projecting from the upper and lower portions of said frame, each of such fasteners consisting of a screwthreaded shank and a head arranged in obtuse-angular relationship, of two bars, and a length of screen fabric attached to said bars and of a width which is less than the length of either bar, said bars being adapted respectively to be received on the shanks of the upper pair of said fasteners and under the shanks of the under pair of said fasteners, with the heads of said fasteners in front and in binding-relation at their inner terminals with the'contiguous edges of said bars. e

4. The combination, in a window screen,

with a window frame, and two pairs of fas- 100 teners respectively projecting from the upper and lower portions of said frame,

each of such fasteners consisting of a shank and a head in angular relation to said shank, of two bars, and a length of screen fabric attached to such bars, the latter being adapted respectively to be received on the shanks of the upper pair of said fasteners and under the shanks of the lower pair of said fasteners, with the heads of said fasteners in front in all cases, and the fasteners in said lower pair being adapted to be turned aside for the reception of said lower bar, and when turned down to have a cam action effect on said lower bar. HERBERT A. NORTHROP. Witnesses:

F. A. CUTTER, A. .C. FAIRBANKS. 

